CN1249866A - Transceiver and telecommunication system having transceiver - Google Patents
Transceiver and telecommunication system having transceiver Download PDFInfo
- Publication number
- CN1249866A CN1249866A CN98803040A CN98803040A CN1249866A CN 1249866 A CN1249866 A CN 1249866A CN 98803040 A CN98803040 A CN 98803040A CN 98803040 A CN98803040 A CN 98803040A CN 1249866 A CN1249866 A CN 1249866A
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- Prior art keywords
- transceiver
- frequency
- divider
- transmitter
- receiver
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000010295 mobile communication Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000006641 stabilisation Effects 0.000 claims description 4
- 238000011105 stabilization Methods 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
- H04B1/405—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with multiple discrete channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Transceivers (AREA)
Abstract
A transceiver comprises transmitter means and receiver means, mode means coupled to the transmitter means and the receiver means for simultaneously performing a receiving and transmitting of signals, oscillator means coupled to each of the transmitter means and the receiver means respectively, and frequency divider means coupled between the oscillator means on the one hand and the transmitter means, and receiver means respectively on the other hand. Such a transceiver is capable of operating in full duplex mode without the necessity of adding extra oscillator means to achieve such an operational mode, while in addition this saves components, costs, chip area, power dissipation and weight, which is important for in particular mobile communication applications.
Description
The present invention relates at a kind of transceiver described in the preorder of claim 1.
The invention still further relates to the communication system that has this transceiver.
This transceiver is suitable for being applied in the disclosed communication system of EP-A-0752761.This known transceiver comprises beat reception machine circuit, dual-mode device, transmitter circuitry and a receiver circuit with antenna, and the local oscillator that is coupled to transmitter and receiver circuit.This dual-mode device is equipped with so that realize signal transfer mode or signal receiving modes, all uses a local oscillator simultaneously in two dual-modes.A deficiency of this known transceiver is that it can not realize that signal side by side receives and sends.
An object of the present invention is to provide a transceiver and telecommunication system, can there is no need to add extra oscillator arrangement with the full duplex mode operation and realize such working method with this transceiver.For this purpose, transceiver according to the present invention has in the described feature of claim 1.Advantage according to this transceiver of the present invention is, no matter the ability of its extended mode how, only needs a local oscillator means to be used for the operation of full duplex mode.This has just saved parts, expense, chip area, power consumption and weight, otherwise will consume on the circuit that adds.This makes that transceiver according to the present invention is well suited for communication system, for example radio transmission system, audio frequency and/or video system, control system, telemetry system, local area network (LAN), wide area network and be well suited for being applied in wireless or the cell phone system, and be suitable for the automobile transceiver that is applied in handset, is used for mobile communication or at the transceiver of the radio-frequency (RF) base station of mobile network.
An embodiment according to transceiver of the present invention is very easy to be integrated on the limited chip, it is characterized by, and divider device comprises at least one frequency divider, preferably is one 2 frequency divider at least.
Another embodiment according to transceiver of the present invention is characterised in that this transceiver comprises short-circuiting means, at least one bypass of this frequency divider.Consequent advantage is, carries out the possibility that bypass provides frequency band to switch for this frequency divider one or more, switches to another one (for example 1900MHz) with the operating frequency of this use in this telecommunication system from one (for example 900MHz).
Now describe the present invention with reference to the accompanying drawings, wherein with example
Fig. 1 illustrates the block diagram according to a possible embodiment of zero IF transceiver of the present invention, and
Fig. 2 illustrates with schematic diagram and comprises a telecommunication system that has according to the mobile device of transceiver circuitry of the present invention.
Run through this figure, identical label is used to indicate identical feature.
Fig. 1 illustrates the block diagram of a possible embodiment of transceiver 1.Transceiver 1 comprises transmitter installation 2 and receiver apparatus 3, all is coupled to antenna 4 by mode device 5.Mode device 5 can be carried out with other transceiver 1 or platform, comprise the full-duplex communication of the network or the like of this transceiver 1.Transceiver 1 comprises each the oscillator arrangement 6 that is coupled to transmitter installation 2 and receiver apparatus 3 respectively.Transceiver 1 comprises divider device 7, is coupling on the one hand between oscillator arrangement 6 and the transmitter installation 2, is coupling on the other hand between oscillator arrangement 6 and the receiver apparatus 3.Divider device 7 is referred to as 7-1,7-2,7-3, and 7-4, comprise frequency divider integrated easily and that realize, as counter, trigger 2 frequency dividers and/or (words if necessary) 3 frequency dividers, or said frequency divider, counter and/or trigger series connection are shown in Fig. 1.
European patent application 97.200739 (submission on March 12nd, 1997) is included in this as a reference, and it comprises the example of various possible embodiment and the scheme of said frequency divider.Transceiver 1 can utilize zero IF or low IF receiver apparatus 3 or transmitter installation 2 to realize for example dual translated zero IF or low IF type respectively.Will be provided to the I of said device 2 and 3 and Q signal by frequency divider 7-1,7-2,7-3 and 7-4 successfully export.Transceiver 1 comprises short-circuiting means 8 as shown, and bypass is at least one of frequency divider of 7-1 and 7-3 for example.Short-circuiting means that these outsides provide forms switching device shifter 8-1, and the embodiment of 8-2 and 8-4 is in particular for the semiconductor switch devices of the divider ratios of controlling this frequency divider.In the possible embodiment of another one (not illustrating), these switching device shifters 8-1,8-2 and 8-3 are known this frequency dividers that is provided in inherently itself.Switching device shifter 8-1,8-2, and 8-3 and 8-4 be used to from a reception/transmission frequency, for example 800MHz roughly switches to the another one frequency, for example 1900MHz roughly.Wherein installing 8-3 is connected between oscillator arrangement 6 and the local oscillator terminal 9.Oscillator arrangement 6 comprises two oscillators that separate as illustrating.Can carry out full-duplex communication with any of these frequencies.
For example, if frequency divider 7-1 is that 2 frequency dividers and switch 8-1 and 8-2 are closed to 7-4, if on local oscillator terminal 9, be 580MHz (F then by this selected oscillator arrangement frequency of switch 8-3
RF2/3), it (is F that this reception/transmission frequency mainly is present near the 870MHz
RF), and local oscillator input 10-1 on this receiver apparatus 3 and transmitter installation 2 and 10-2 receive 290MHz (F respectively
RF1/3), be used for dual conversion purpose.If switch 8-1 and 8-2 open, then by the selected 1544MHz (F on terminal 9 of switch 8-3
RF4/5) local oscillation frequency a 1930MHz (F will be provided
RF) reception/transmission frequency, and 386MHz (F
RF1/5) the frequency of a terminal 10-1/2.
Up to the present, Fig. 1 relates to provides the dual conversion that is used in transmitter installation 2 and the receiver apparatus 3.As an adaptation, if the frequency signal on terminal 10-1/10-2 and 9 for example is combined in the frequency mixer.Then these signals can be used to device in 2,3 on or down conversion.This just guarantees to produce the correct frequency step of 30KHz and 50KHz in the different operating mode, this will illustrate in the back simply.Replacement for said frequency mixer above-mentioned is to use a multiplier, frequency tripler for example, if switch 8-2 is closed, and a 5x multiplier, if 8-2 is opened, so that produce F
RF
The stability of frequency is that the oscillator 11 by the frequency stabilization that for example comprises a crystal provides.This stable oscillator 11 is connected to a phase-locked loop, comprises frequency divider 12, has comparator 13, second input 15 of an input 14 that is connected to frequency divider 12 and an output 16 that is used for by loop filter 17 frequency control signal being provided to oscillator arrangement 6.Local oscillator terminal 9 is connected to the input 15 of comparator 13 by frequency divider 18.Certainly as described in resembling, this frequency divider 12 of phase-locked loop and 18 divider ratios are selected such that a known proper operation that realizes this loop.The oscillator 11 of frequency stabilization also is used to the stable frequency excitation of second phase-locked loop, and second phase-locked loop comprises frequency divider 19, has the comparator 20 of an input that is connected to frequency divider 19, second input 22 an and frequency control signal is provided to a fixed frequency and a therefore output 23 of fully-integrated oscillator 25 by a loop filter 14.Fixed frequency (compensation) oscillator 25 is coupled to the input 27 of frequency divider 28 to oscillator output end 26 by frequency divider 29 and 30.The output of frequency divider 28 is imported into second input 22 of comparator 20.The output 31 of frequency divider 30 is connected to a mixting circuit 32 of the transmission part of this transceiver 1.Quilt was selected again as described in the frequency divider 19,29,30 of certain this phase-locked loop and 28 divider ratios resembled.The operation in frequency step or adjustment loop is, when signal reception or the transmission of signal simultaneously, during a PCS (personal computer system) for example, frequency step in the adjustment loop 6,17,16,18 of the channel frequency of 1930MHz is 50KHz, and during honeycomb mode, be 30KHz at this frequency step of the channel frequency of 870MHz.Mode switch 8-4 bypass frequency divider 29 in the latter and one of 30, in situation is shown, will be at the frequency divider 29 of the whole signals of single-chip transceiver 1 integration of hope by bypass.If for example frequency divider 29 and 30 is 2 frequency dividers, if switch 8-4 is opened, roughly be 45MHz to the mixer frequency of frequency mixer 32 then at output 31, and if switch 8-4 is closed, then frequency is 80MHz, as long as compensated oscillator 25 still is used for being switched to 160MHz from 180MHz.
Fig. 1 shows that this set frequency divider 7-1 and 7-2 and switch 8-1 are duplicated in this set frequency divider 7-3 and 7-4 and switch 8-2.Certainly one of set and switch can be save.Certainly, frequency divider above-mentioned may be programmable, so that make that its divider ratios can be according to a kind of programmable mode Be Controlled, so that determine a wide frequency application scope.
Fig. 2 illustrates the telecommunication system 33 that comprises several transceivers 1.Telecommunication system 33 can be a radio transmitting system, audio frequency and/or PS, control system, telemetry systems, local area network (LAN), wide area network.Transceiver 1 also can be used in wireless or the cell phone system, in the handset, and is being used for an automobile transceiver of mobile communication or the transceiver in the radio-frequency (RF) base station of a mobile network.
According to preceding described, for a those skilled in the art, be apparent that, can define in appended claim in the scope of the present invention and make various improvement, so the present invention is not limited to the example that this provides.
Claims (11)
1. a transceiver comprises: transmitter installation and receiver apparatus; Be coupled to the mode device of transmitter installation and receiver apparatus, be used to carry out the signal transmission/receiving mode of transceiver; And be coupled to each oscillator arrangement of transmitter installation and receiver apparatus respectively; Receive and send when it is characterized in that this mode device is equipped with and realize signal; And this transceiver comprises divider device, is coupling on the one hand between oscillator arrangement and the transmitter installation respectively, and is coupling on the other hand between oscillator arrangement and the receiver apparatus.
2. transceiver as claimed in claim 1, wherein this divider device comprises at least one frequency divider.
3. transceiver as claimed in claim 2, wherein this at least one frequency divider comprises at least one 2 frequency divider and/or at least one 3 frequency divider.
4. as any one transceiver of claim 1-3, wherein this transceiver and particularly this divider device comprise switching device shifter, are used for this divider device is switched to the another one divider ratios from a divider ratios.
5. transceiver as claimed in claim 4, wherein this switching device shifter is equipped with as short-circuiting means, is used at least a portion of this divider device of short circuit.
6. transceiver as claimed in claim 1, wherein this receiver or transmitter installation comprise beat receiver or transmitter circuitry respectively; Or comprise one zero IF or low IF receiver or transmitter circuitry respectively, for example comprise a double conversion zero IF or low IF receiver or transmitter respectively.
7. transceiver as claimed in claim 1, wherein this transceiver comprises a phase-locked loop with oscillator arrangement, this phase-locked loop is coupled to the oscillator of a frequency stabilization.
8. transceiver as claimed in claim 7, wherein this transceiver comprises a frequency step phase-locked loop that is coupled to this frequency stabilization oscillator.
9. transceiver as claimed in claim 1, this transceiver are the one chip transceivers.
10. the telecommunication system with a transceiver comprises: transmitter installation and receiver apparatus; Be coupled to the mode device of transmitter installation and receiver apparatus, be used to carry out the signal transmission/receiving mode of this transceiver; And be coupled to each oscillator arrangement of transmitter installation and receiver apparatus respectively; Receive and send when it is characterized in that this mode device is equipped with and realize signal; And this transceiver comprises divider device, is coupling on the one hand between oscillator arrangement and the transmitter installation respectively, and is coupling on the other hand between oscillator arrangement and the receiver apparatus.
11. as the telecommunication system of claim 10, wherein this telecommunication system is radio transmission system, audio frequency and/or a video system, control system, telemetry system, local area network (LAN), wide area network, wireless or cell phone system, is used for the automobile transceiver of mobile communication or at the transceiver of the radio-frequency (RF) base station of mobile network.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP97203448 | 1997-11-06 | ||
| EP97203448.2 | 1997-11-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1249866A true CN1249866A (en) | 2000-04-05 |
| CN1154248C CN1154248C (en) | 2004-06-16 |
Family
ID=8228908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB988030403A Expired - Fee Related CN1154248C (en) | 1997-11-06 | 1998-10-19 | Transceiver and telecommunication system having transceiver |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6697606B1 (en) |
| EP (1) | EP0958661A1 (en) |
| JP (1) | JP2001508272A (en) |
| KR (1) | KR20000069896A (en) |
| CN (1) | CN1154248C (en) |
| WO (1) | WO1999025076A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075209B (en) * | 2009-11-23 | 2013-08-07 | 上海无线通信研究中心 | Asymmetric frequency division duplex transceiving system and transceiving method |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0958661A1 (en) * | 1997-11-06 | 1999-11-24 | Koninklijke Philips Electronics N.V. | A transceiver and a telecommunication system having a transceiver |
| FI112741B (en) | 1998-11-26 | 2003-12-31 | Nokia Corp | Method and apparatus for transmitting and receiving RF signals at various radio interfaces of data transmission systems |
| US6516184B1 (en) * | 1999-08-31 | 2003-02-04 | Skyworks Solutions, Inc. | Multi-band transceiver having multi-slot capability |
| US6741847B1 (en) * | 2000-06-28 | 2004-05-25 | Northrop Grumman Corporation | Multi-carrier receiver frequency conversion architecture |
| US20090111457A1 (en) * | 2007-10-31 | 2009-04-30 | Raze Technologies, Inc. | Wireless communication system and device for coupling a base station and mobile stations |
| US7346347B2 (en) | 2001-01-19 | 2008-03-18 | Raze Technologies, Inc. | Apparatus, and an associated method, for providing WLAN service in a fixed wireless access communication system |
| US20030092419A1 (en) * | 2001-11-09 | 2003-05-15 | Dan Nobbe | Method and apparatus for a near-unity divider in a direct conversion communication device |
| US8520564B1 (en) * | 2010-09-02 | 2013-08-27 | Viasat, Inc. | Integrated RF transceiver |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5355517A (en) * | 1984-12-28 | 1994-10-11 | Motorola, Inc. | Method and apparatus for automatic alternate communications system access |
| US5276915A (en) * | 1991-11-04 | 1994-01-04 | Motorola, Inc. | Transceiver having a divide-down transmit offset scheme |
| JP2850160B2 (en) * | 1991-01-25 | 1999-01-27 | 松下電器産業株式会社 | Time division duplex wireless transceiver |
| FI92636C (en) * | 1992-02-14 | 1994-12-12 | Nokia Telecommunications Oy | radio device |
| US5311149A (en) * | 1993-03-12 | 1994-05-10 | Trimble Navigation Limited | Integrated phase locked loop local oscillator |
| IT1272078B (en) * | 1993-12-16 | 1997-06-11 | Cselt Centro Studi Lab Telecom | TRANSCEIVER FOR HIGH SPEED NUMERICAL SIGNALS IN CMOS TECHNOLOGY |
| FI941862A (en) * | 1994-04-21 | 1995-10-22 | Nokia Mobile Phones Ltd | Method and radio frequency system for generating frequencies for receivers and transmitters of two radio communication systems operating in different frequency bands and a receiver and transmitter operating in two different frequency bands and the use of the former in a mobile telephone |
| US5548839A (en) * | 1994-10-14 | 1996-08-20 | Caldwell; Stephen P. | Wide band radio-frequency converter having multiple use of intermediate frequency translators |
| KR960038686A (en) * | 1995-04-13 | 1996-11-21 | 김광호 | Signal Transceiver Circuit by Single Frequency |
| JPH0918378A (en) * | 1995-07-03 | 1997-01-17 | Matsushita Electric Ind Co Ltd | Radio circuit |
| US5710998A (en) * | 1995-12-19 | 1998-01-20 | Motorola, Inc. | Method and apparatus for improved zero intermediate frequency receiver latency |
| JP2917890B2 (en) * | 1996-02-09 | 1999-07-12 | 日本電気株式会社 | Wireless transceiver |
| FI104924B (en) * | 1996-02-29 | 2000-04-28 | Nokia Mobile Phones Ltd | A transmitter-receiver with interchangeable frequency band and bandwidth |
| JPH09261106A (en) * | 1996-03-22 | 1997-10-03 | Matsushita Electric Ind Co Ltd | Mobile radio equipment operated for plural frequency bands |
| FI112133B (en) * | 1996-03-29 | 2003-10-31 | Nokia Corp | Method of forming the frequencies of a direct conversion transmitter / receiver operating in two different frequency ranges and a direct conversion transmitter / receiver of a radio communication system operating in two different frequency ranges and using the foregoing in a mobile telephone |
| FI100286B (en) * | 1996-04-01 | 1997-10-31 | Nokia Mobile Phones Ltd | Transmitter / receiver for transmitting and receiving an RF signal in two frequency ranges |
| US5802463A (en) * | 1996-08-20 | 1998-09-01 | Advanced Micro Devices, Inc. | Apparatus and method for receiving a modulated radio frequency signal by converting the radio frequency signal to a very low intermediate frequency signal |
| EP0958661A1 (en) * | 1997-11-06 | 1999-11-24 | Koninklijke Philips Electronics N.V. | A transceiver and a telecommunication system having a transceiver |
-
1998
- 1998-10-19 EP EP98946656A patent/EP0958661A1/en not_active Withdrawn
- 1998-10-19 WO PCT/IB1998/001645 patent/WO1999025076A1/en not_active Application Discontinuation
- 1998-10-19 CN CNB988030403A patent/CN1154248C/en not_active Expired - Fee Related
- 1998-10-19 JP JP52579099A patent/JP2001508272A/en not_active Withdrawn
- 1998-10-19 KR KR1019997006089A patent/KR20000069896A/en not_active Application Discontinuation
- 1998-11-04 US US09/185,759 patent/US6697606B1/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075209B (en) * | 2009-11-23 | 2013-08-07 | 上海无线通信研究中心 | Asymmetric frequency division duplex transceiving system and transceiving method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000069896A (en) | 2000-11-25 |
| JP2001508272A (en) | 2001-06-19 |
| CN1154248C (en) | 2004-06-16 |
| WO1999025076A1 (en) | 1999-05-20 |
| US6697606B1 (en) | 2004-02-24 |
| EP0958661A1 (en) | 1999-11-24 |
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| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |